It wasnarrated that 'Abdullah bin Harith said:
"During the caliphateof'Uthman, when the people were present in large numbers, I askedabout Duha prayer, and I could not find anyone who could tell me thathe, meaning the Prophet (ﷺ), had prayed it, apart from Umm Hani'.She told me that he had prayed it with eight Rak'ah."
English reference: Vol. 1, Book 5, Hadith 1379
Arabic reference: Book 5, Hadith 1442